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Click on image for the lowdown. 
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| | | Forums66 Topics128,014 Posts1,055,324 Members48,419 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#14879 09/19/2004 5:05 PM | Joined: Apr 2004 Posts: 35 Junior Member | | Junior Member Joined: Apr 2004 Posts: 35 | I have an open driveline on my 4400. Stamped on the top of the rear end is #TL 727. What does the number mean. Does it refer to the ratio of the rear end?
Thanks
Tony :confused: | | |
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